Swiveling hook device



April 7, 1936. M. H. McEwAN 2,036,594

SWIVELING HOOK DEVICE Filed May 18, 1955 A 4 Sheets-Sheet -l Fig. 1.

`pr 7, 1936. M. H. MCEWAN SWIVELING HOOK DEVICE Y 4 Sheets-Sheet 2 Filed May 18, 1935 Figa.

Ama 7'? 1936.

M. H. MEWAN 2,036,594

SWIVELING HOOK DEVICE Filed May 18, 1935 4 Sheets-Shea?l 3 Fig. 4.

April 7, 1936. M, H. Mor-:WAN

SWIVELING HOOK DEVICE 4 Sheets-Sheet 4 Filed May 18, 1955 Figi Patented Apr. 7, 1936 UNITED STATES SWIVELING HOOK DEVICE Matthew Hamilton McEwan, London, England, assignor to Woodall-Duckham (1920) Limited, London, England, a British company Application May 18, 1935, Serial No. 22,244 In Great Britain August 2, 1934 6 Claims.

The present inventio-n relates to improvements in the hook members which are provided on cokeoven door machines for engaging, removing and supporting in the withdrawn position the heavy doors which areV used to close the ends of horizontal coke-oven chambers.

i, Coke-oven doors are normally removed from and replaced in the oven by a door-operating machine which has a movable arm carrying a fixed hook at the end thereof. This hook is en gaged under a suitable lip or projection on the exterior of the door, and when the door locking means have been released, the arm with the hook thereon is raised slightly, thus raising the door, and then drawn backwards to withdraw the door.

r-When doors of the so-called self-sealing type are employed it is essential that the sealing edge on the door should be thoroughly cleaned before the door is replaced, in order to remove tarry and carbonaceous incrustations from that part of the door where sealing occurs, so that on replacement the door may re-seat properly. Also, it is equally necessary that clay-luted doors should be cleaned before replacement. On the pusher 'side of the coke-oven battery, the arm carrying the door is usually swung slightly to one side after removal of the door, in order t'o allow the ram to operate, and in consequence the inner surface of the door is turned slightly outwards from the oven battery. On the coke side of the battery, however, the door is usually withdrawn parallel to its position in the oven, and thus faces the ovens. In consequence, the space available is very inadequate for the operatives to clean the door effectively, or to make any minor adjustments to the sealing devices, while in addition they are exposed to the intense heat from the face of the oven battery.

According to the present invention, the above difficulties are obviated by arranging the hook member which supports the coke-oven door to rotate about a vertical or substantially vertical axis, coincident with or near to the point at which the weight of the door is applied. With the present invention, the door, after withdrawal, may be turned aside through an angle of 45 or more, according to the arrangements employed, thus turning the inner face of the door partially outwards, and permitting easy and unrestricted access for the purpose of cleaning. It is clear that the invention may also be applied with advantage to the door-operating machine on the pusher side of the battery.

The invention is more particularly described with reference to the accompanying drawings, in

which Figure 1 represents a side sectional elevation through the swiveling hook mechanism; Figure 2 shows a plan view of the hook of Figure 1; Figure 3 is a side elevation of a coke-oven door operating machine showinghow the hook of the present invention is applied thereto; Figure 4 is a side elevation on an enlarged scale showing the relative positionsof the swiveling hook and a rotatable buffer arrangement for use therewith; Figure 5 is a plan view of the said buffer arrangement; and Figure 6 is an elevation of the same.

The hook consists of a U-shaped member l at the upper end of a vertical shaft 2. The hook rotates in a heavy duty double-purpose ball-bearing 3, of the known type, which is adapted to take both the vertical load due to the weight of the door, and the radial thrust due to the fact that the door is supported outside its centre of gravity, while the lower end of the shaft 2 rotates in ball-bearings 4 which are of the type adapted to support a radial thrust only. Preferv ably locking means are provided, consisting of the spring-loaded plunger 5, which engages a central aperture 5c, as shown in Figures 1 and 2, whereby the hook may be locked in a central position about the axis of rotation. It is advisable to lock the hook in the central position before a. door is replaced in an oven, in order that the door may be located correctly with respect to the mouth of the oven. Other apertures such as 5a and 5b may also be provided in the hook member l, whereby the hook may be locked in other defined positions about the axis of rotation. It is desirable to lock the hook in its displaced position when the door is being cleaned or adjusted.

As shown in Figure 3, the swiveling hook of the present invention is substituted for the former fixed hook at the end of the door` operating arm, which arm is pivoted horizontally about the axis 6 on the door operating machine. The hook can be brought into engagement with or released from the cor-operating lip or projection on the door by the movement of the lever connected at 1.

The lower end of the shaft 2 may project as shown at 2a and may be provided with a squared portion which can be engaged by a key so that the hook with the door supported thereon may be easily turned.

Again referring to Figure 3, it will be seen that the lower part of the coke-oven door is steadied against movement, in accordance with the usual practice, by a buffer arrangement 8, which engages the two upstanding ribs Il on the outer face of the door. The present invention makes it necessary that the head of the buffer 8 should also be able to pivot with the door about a vertical axis which is substantially the same as the axis of rotation of the hook I. The buffer 8 is accordingly arranged to pivot about a vertical axis on its mounting 9, and one suitable arrangement for this purpose is shown in detail Figures 4, 5 and 6.

Between the, ends of the upper and lower members 9 .isi` fixed a vertical shaft I2, and Va sleeve member I3 can rotate freely about the shaft I2. Attached to, and projecting ho-rizontally from the sleeve I3 isa screw-threaded shaft I4 (see Figures 5 and 6). Two fixed rods I5 also project from the sleeve I 3 in the same directionas the shaft i4. A flat plate I6, having a large centralfaperture i1, and two smaller apertures to accommodate the rods I5, can slide freely on these rods i5.

A hand wheel I 8, internally'threadedi.isscrewed onto the screwed shaft I4. Attached'to the handwheel I8 is a collar I9 which passes through ther aperture Il the plate I6, and engages the. two sides of this plate; so that, as the hand-wheel I8 is rotated the' plate I6 is moved backwards and forwards alongthe shaft I4.

At the ends of the plate I6 are xed projecting f members 8 having slightly curved side-pieces 8c. The members 8 and 8a engage the ribs I'I of the' the whole of the lowersupport rotates about the' I verticalshaft I2 through the same angle as the door; hence the door is steadied and preventedA from' moving, no matter in what angular position it may be.

A coke-oven door machine having the present invention applied thereto'is operated in the same manner as hitherto, for thejrernovalof the oven door, the hook being locked inthe central position. After withdrawal ofthe door, the locking device is released and the -floorturnedr aside for cleaning or adjustment, being returned to and locked in the central position4 prior to replaced ment of the` door in the oven.

What I claim is:-

1. A hook device for coke-oven door operating machines comprising an arm pivoted about a. horizontal axis on the machine, a rotatable hook member on said arm for engaging with the door, and means for actuating said pivoted arm to bring said hook member into and out of engagement withthe door. Y

2. A hook device for coke-ovendoor operating machines, comprising an arm pivoted about a fixe-d horizontal axis on the machine, a nook member rotatable about a vertical axis at one end of said arm for engaging with` the door, and means for actuating said pivoted arm to bring said hookmember into and out of engagement with the door.

3. Ahookdevice for coke-oven door operating machines includingV an arm pivoted about a horizontal axis on the machine, a bearing at the end ofl said arm adjacent the door, and a hook niemi ber for engaging with the door rotatable in said bearing. Y Y

a. A coke-oven door operating machine, includ-f ing an arm pivoted about a horizontal axis. on'.

the machine, a' vertically rotatable hook member at one end of'said arm' for engaging` with the door). and a rotatable buier device on said machine rotatable eoaxially with said' hook member,A said.

buffer device engagingy the lower part` of the-door..

5. A hoek device for coke-.oven door operating. machines, comprising an armV pivoted about a..

machines,` comprising; an arm; pivoted about` a,`

horizontalY axis on the machine, a hook member rotatable about ay vertical' axis at onev end of said'. arm for engaging. with the door, means for actu,- ating said pivoted arm to bring said hook memberinto and out of. engagement withthe doonand means'for locking said'v rctatable hook member in a. define-,1;position.v

Y MATTHEW HAMILTON 

